Drought-adaptive mechanisms of young sweet cherry trees in response to with holding and resuming irrigation cycles
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This research was funded by the Spanish Economy and Competitiveness Ministry (MINECO) and the European Agricultural Funds for Rural Development. References: AGL2013-49047-C2-1-R, AGL2016-77282-C33-R and PID2019-106226RB-C22/AEI/10.13039/501100011033. Pedro José Blaya-Ros acknowledge the research initiation grant received from the Universidad Politécnica de Cartagena (UPCT). Victor Blanco acknowledges the financial support received for postdoctoral training (Postdoctoral Fellowship 21261/PD/19) from the Fundación Séneca, Comunidad Autónoma de la Región de Murcia (Spain).Fecha de publicación
2021Editorial
MDPICita bibliográfica
Blaya-Ros, P.J.; Blanco, V.; Torres-Sánchez, R.; Domingo, R. Drought-Adaptive Mechanisms of Young Sweet Cherry Trees in Response to Withholding and Resuming Irrigation Cycles. Agronomy 2021, 11, 1812. https://doi.org/10.3390/agronomy11091812Palabras clave
Leaf insertion angleLeaf water potential and components
Prunus avium L
Water stress
Stem water potential
Vegetative growth
Defoliation
Resumen
The present work evaluates the main adaptive mechanisms developed by young sweet cherry trees (Prunus avium L.) to cope with drought. For this purpose, the young trees were subjected to two drought cycles with different water stress intensities followed by a recovery period. Three irrigation treatments were applied: control treatment (CTL) irrigated to ensure non-limiting soil water conditions; moderate water stress (MS) subjected to two drying cycles whose duration was dependent on the time elapsed until the trees reached values of midday stem water potential (Ystem) of 1.3 and 1.7 MPa for the first and second cycle, respectively; and severe water stress (SS) similar to MS, but with reference values of 1.6 and 2.5 MPa. In-between drought cycles, MS and SS trees were irrigated daily as the CTL trees until reaching Ystem values similar to those of CTL trees. The MS and SS trees showed an important stomatal regulation and lower vegetative growth. The decreasing leaf turgor potential ...
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